The combination of L-theanine and caffeine improves cognitive performance and increases subjective alertness

@article{Giesbrecht2010TheCO,
  title={The combination of L-theanine and caffeine improves cognitive performance and increases subjective alertness},
  author={T. Giesbrecht and J. Rycroft and M. Rowson and E. D. de Bruin},
  journal={Nutritional Neuroscience},
  year={2010},
  volume={13},
  pages={283 - 290}
}
  • T. Giesbrecht, J. Rycroft, +1 author E. D. de Bruin
  • Published 2010
  • Psychology, Medicine
  • Nutritional Neuroscience
  • Abstract The non-proteinic amino acid L-theanine and caffeine, a methylxanthine derivative, are naturally occurring ingredients in tea. The present study investigated the effect of a combination of 97 mg L-theanine and 40 mg caffeine as compared to placebo treatment on cognitive performance, alertness, blood pressure, and heart rate in a sample of young adults (n = 44). Cognitive performance, self-reported mood, blood pressure, and heart rate were measured before L-theanine and caffeine… CONTINUE READING
    62 Citations

    Topics from this paper

    Assessing the effects of caffeine and theanine on the maintenance of vigilance during a sustained attention task
    • 69
    • PDF
    Effects of acute caffeine, theanine and tyrosine supplementation on mental and physical performance in athletes
    • 3
    Caffeine and theanine exert opposite effects on attention under emotional arousal.
    • 8
    • Highly Influenced
    Acute effects of tea consumption on attention and mood.
    • 41
    • PDF
    The effect of black tea on human cognitive performance in a cognitive test battery
    • 2

    References

    SHOWING 1-10 OF 52 REFERENCES
    Psychological effects of dietary components of tea: caffeine and L-theanine.
    • 98
    Regular Caffeine Consumption: A Balance of Adverse and Beneficial Effects for Mood and Psychomotor Performance
    • 156
    Subjective, behavioral, and physiological effects of acute caffeine in light, nondependent caffeine users
    • 181
    L-theanine, a natural constituent in tea, and its effect on mental state.
    • 114
    • PDF